1'#'+Math.floor(Math.random()*16777215).toString(16);

1function generateRandomColor() {
2  var letters = '0123456789ABCDEF';
3  var color = '#';
4  for (var i = 0; i < 6; i++) {
5    color += letters[Math.floor(Math.random() * 16)];
6  }
7  return color;
8}
9
10var randomColor=generateRandomColor();//"#F10531"

1var randomColor = '#'+Math.floor(Math.random()*16777215).toString(16);
2//generates a random color -> #56eec7

1'#'+(0x1000000+(Math.random())*0xffffff).toString(16).substr(1,6)

1var r = () => Math.random() * 256 >> 0;
2var color = `rgb(${r()}, ${r()}, ${r()})`;

1var randomColor = Math.floor(Math.random()*16777215).toString(16);